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Summit-Argo, IL 7-Day Weather Forecast
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Summit-Argo Weather Forecast
Summit-Argo, IL Weather Forecast Date: 856 PM CDT Fri Sep 04 2026
Weather forecast for Summit-Argo, IL
Tonight Lo: 75°F Lo: 24°C |
Tonight... Partly cloudy. A slight chance of showers and thunderstorms early in the evening, then a chance of showers and thunderstorms in the late evening and early morning. A slight chance of showers and thunderstorms late. Patchy fog late. Lows in the mid 70s. Northwest winds around 5 mph, becoming northeast after midnight. Chance of precipitation 50%. |
Sat Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
Saturday... Partly cloudy in the morning, then becoming mostly cloudy. Patchy fog early in the morning. Humid with highs in the mid 80s inland, but only around 80 near the lake. North winds 5 to 10 mph, increasing to northeast 10 to 15 mph in the afternoon. |
Sun Hi: 79°FHi: 26°C Lo: 65°F Lo: 18°C |
Sunday... Mostly sunny. Highs in the upper 70s. Northeast winds 5 to 10 mph. |
Labor Day Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Labor Day... Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 80s inland, but only in the upper 70s near the lake. |
| Tue Hi: 89°FHi: 32°C Lo: 71°F Lo: 22°C |
Tuesday... Partly cloudy in the morning, then becoming mostly cloudy. Highs in the upper 80s. |
| Wed Hi: 90°FHi: 32°C Lo: 69°F Lo: 21°C |
Wednesday... Mostly cloudy in the morning, then becoming partly cloudy. Highs around 90. |
| Thu Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Thursday... Partly cloudy. Highs in the lower 80s. |
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